/usr/include/sys/ioctl.h
/usr/include/sys/limits.h
/usr/include/errno.h
/usr/include/sys/ioctl.h
surrounded by
#ifndef _IOCTL_H #define _IOCTL_H ... #endifto prevent multiple includes.
/usr/include/sys/ioctl.h
/usr/include/sys/limits.h
/usr/include/errno.h